1. The sunshade effect of the outer awning is better than the inner sunshade. If the outdoor shading system is installed, the indoor temperature can be reduced by 7°C-8°C, which saves about 40%~60% of air conditioning energy consumption. If the indoor shading system is installed, the indoor temperature can be reduced by 4°C~5°C, saving about 30%. %~45% of air conditioning energy consumption. In terms of energy saving, the outdoor shading system is indeed better than the indoor shading system.
2. When the solar radiation reaches the glass curtain wall, the external shading system can block it, and because there is flowing air between the external shading facility and the window to take away the heat, there is no chance of heat entering the room. However, the internal shading is treated after the solar radiation enters the room, thus forming a heat island effect between the curtain and the glass. Since the curtain does not have a sealing effect indoors, the heat is easily diffused indoors.